Canada’s September 15, 2026 capital investment announcement may change how manufacturers evaluate certain equipment purchases and facility investments. For an owner considering a new plant, an expansion or a production-line upgrade, the opportunity is worth examining—but the headline needs unpacking. The newly proposed Productivity Mega Deduction and the separate manufacturing-building incentive are not the same tax measure. They have different property rules, and neither should be treated as an automatic grant or a reason to commit to a construction schedule without a project-specific review.

Here is what manufacturing facility owners should know, what still requires confirmation and how the proposed rules can inform early construction planning.

What did Canada announce in September 2026?

On September 15, the federal government proposed the Productivity Mega Deduction. The proposal would permanently allow immediate expensing of a broad range of depreciable property acquired on or after September 15, 2026. In simple terms, immediate expensing allows a qualifying taxpayer to deduct the eligible capital cost in the year the asset becomes available for use rather than spreading the deduction over multiple years under the usual capital cost allowance (CCA) schedule.

That description is not a promise that every asset qualifies. The proposal explicitly excludes several kinds of property, including buildings and additions in CCA Classes 1 and 3, certain intangible property and some vehicles. Previously used assets also face conditions, including restrictions involving prior ownership by the taxpayer or a non-arm’s-length person and tax-deferred rollovers.

For manufacturing owners, the critical distinction is that ordinary Class 1 manufacturing buildings are excluded from the new Mega Deduction. The government’s September backgrounder directs manufacturing and processing buildings to a separate temporary measure first announced in Budget 2025. Equipment and building costs therefore should not be grouped into one assumed 100% deduction without reviewing their classifications.

What is the separate incentive for manufacturing buildings?

Budget 2025 proposed temporary immediate expensing for eligible manufacturing and processing buildings, including eligible additions and alterations. The proposal applies to qualifying property acquired on or after November 4, 2025, subject to its detailed conditions.

To qualify under the described manufacturing-use test, at least 90% of a building’s floor space must be used to manufacture or process goods for sale or lease. The proposed 100% first-year deduction applies in the first taxation year the eligible property is used for qualifying manufacturing or processing and meets that minimum floor-space requirement.

That makes the facility’s intended use important. Production, warehousing, offices, testing areas, employee spaces and future expansion areas may serve different operational purposes; owners should not assume that every part of a proposed plant automatically counts toward the 90% test. A tax adviser should evaluate the actual floor-space plan, use of each area, ownership structure and property classification.

The Budget 2025 proposal also includes conditions for previously used property and possible tax recapture if the building’s use subsequently changes. Eligibility is determined by the applicable tax rules, not simply by calling a project an industrial building.

Why does the before-2030 date matter?

The proposed manufacturing-building deduction phases down according to when eligible property is first used for qualifying manufacturing or processing:

• Before 2030: a proposed 100% first-year deduction.
• In 2030 or 2031: a proposed enhanced first-year deduction of 75%.
• In 2032 or 2033: a proposed enhanced first-year deduction of 55%.
• After 2033: the temporary enhanced building rate would no longer be available; ordinary applicable CCA rules may still provide deductions.

The deadline is not merely a contract-signing or construction-start date. Under the proposal, the relevant milestone concerns first use for qualifying manufacturing or processing and satisfaction of the floor-space requirement. The measure does not imply that all tax deductions disappear on January 1, 2030.

For an owner already considering a facility, this creates a useful question: does a realistic design, approvals, procurement, construction, equipment-installation and commissioning schedule align with the intended operational start date? The answer needs to account for the actual facility and the proposed tax conditions—not a generic promise that any building can be completed before a deadline.

Does a 100% deduction mean the government pays for a factory?

No. A tax deduction is not a dollar-for-dollar reimbursement. Immediate expensing changes when an eligible taxpayer may deduct capital costs from income. It does not mean the government pays the construction invoice, and the financial value depends on the business’s tax position, applicable rates and other circumstances.

For example, a facility that costs $10 million does not automatically produce $10 million in cash from the government. The project still requires financing and the business must establish how any deduction would affect its own taxes. Owners should ask their accountants to model both the proposed treatment and a scenario in which eligibility, timing or legislation differs from expectations.

It is also important to distinguish proposed law from enacted law. As of September 17, 2026, the government documents cited here present these measures as proposals. Before relying on them in a board approval, investment model or construction contract, confirm the current legislative status and the final applicable rules with qualified advisers.

Five planning questions for manufacturing facility owners

1. What does the operation actually require?

Start with the production process rather than a predetermined building size. Identify equipment footprints, process flow, material handling, structural loads, clear heights, servicing and maintenance access. These requirements influence both construction scope and the intended use of the building.

2. How will the building’s space be used?

Map production, offices, storage, testing and expansion areas early. This supports layout and estimating, while allowing tax advisers to assess the proposed manufacturing-use test without guessing from a preliminary building label.

3. Which approvals and utilities could control the schedule?

Review site suitability, zoning, permits, power capacity, gas, water, drainage and process-specific infrastructure. The critical path for a manufacturing project may be driven by utility connections or equipment procurement rather than the structural frame alone.

4. When must the facility be operational?

Work backward from the actual production-readiness milestone. Design, permitting, long-lead equipment, site works, building construction, installation and commissioning need to fit together. For the proposed building incentive, the relevant date and qualifying use should be confirmed with tax advisers. Our next article will look more closely at industrial project planning and delivery, including why a credible schedule begins before construction.

5. Can design and construction options be evaluated before the design is locked?

Early construction input can help owners compare layouts, structural spans, equipment foundations, steel, precast and other building systems while cost and schedule implications are still manageable. Design-Build brings design and construction responsibilities together, creating an opportunity to coordinate these decisions earlier. It does not eliminate permitting, procurement or equipment risks; it can make those interfaces more visible during planning.

Connecting capital decisions to industrial construction

Tax planning belongs with the owner’s accountant. Facility planning requires a separate but coordinated conversation about operational requirements, buildability, cost and schedule. These disciplines should inform one another without assuming a tax proposal determines the right size, location or delivery method for a plant.

Kiwi Newton’s Linamar Giga Factory in Welland, Ontario is an example of its industrial design-build experience. Completed in 2024, the 300,000-square-foot project involved steel, precast concrete and construction around specialized manufacturing operations. The project demonstrates the need to understand industrial processes as well as the building itself; it is not evidence that any particular tax incentive applied or that every future project will achieve the same result.

Kiwi has in-house steel fabrication and precast manufacturing capabilities. During early design-build planning, those capabilities can help its team evaluate construction methods, coordination and production requirements alongside the facility’s operational needs. The appropriate approach still depends on the individual project.

Considering a manufacturing facility or expansion?

Start by discussing the proposed tax treatment with your accounting advisers, then develop an operational brief, preliminary construction budget and realistic schedule. These steps can clarify whether the investment fits your business plan before major design decisions are finalized.

Explore Kiwi Newton’s industrial construction services or contact Kiwi Newton to discuss the requirements, budget and potential delivery approach for your project.

Official sources and important qualifications

• Department of Finance Canada: Productivity Mega Deduction backgrounder, September 15, 2026.
• Budget 2025 tax measures: Immediate Expensing for Manufacturing and Processing Buildings.
• Department of Finance: January 2026 explanatory notes to legislative proposals.

Information reviewed September 17, 2026. The measures and timing described above reflect the proposals in the cited government materials, not a determination that legislation is in force or that a particular project qualifies. This article is general information, not legal, accounting or tax advice. Have qualified advisers verify current law and project-specific eligibility before making investment decisions.